Supply-valve for the flushing-tanks of water-closets



(No Modl.)

H. C. WEEDEN.

SUPPLY VALVE FOR THE FLUSHING TAN-KS or WATER GLOSETS, &c. No. 317,055.Patented May 5, 1885.

UNITED STATES PATENT OFFICE.

HENRY O. W'EEDEN, OF BOSTON, MASSACHUSETTS.

SUPPLY-VALVE FOR THE FLUSHING-TANKS OF WATER-CLOSETS, dc.

SPECIFICATION forming part Of Letters Patent NO. 317,055, dated May 5,1885.

Application filed September 11, 1884. (No model.)

To all whom it may concern.-

Be it known that I, HENRY O. WEEDEN, of Boston, in the county of Suffolkand State of Massachusetts, a citizen of the United States, haveinventedcertain new and useful Improvements in Supply-Valves for the Flushing-Tanks of Water-Closets and SimilarStructures, of which the following isa specification.

I The object of my invention is to provide, in connection with the valveordinarily used for opening and closing the passage from the supply-tankto the water-closet, urinal, or similar structure with which it isconnected, appliances whereby, after the valve has been raised from itsseat and the outflow of water has commenced, the fall of the valve maybe.

gradual or retarded, so as to allow a larger quantity of water to escapefor flushing purposes than is the case where the valve is allowed todrop unchecked, as is now ordinarily done. By my present invention thisis accomplished automatically, as will now be described.

In Figures 1 and 2 of the accompanying drawings I have represented invertical section two forms of apparatus, each embodying my invention.

A represents the outlet and valve-seat, as ordinarily constructed andlocated, at the bottom of the flushing-tank B. The valve 0 may be thatordinarily used, as shown in Fig. 1, or it may be provided with asupplemental disk or plate, a, as shown in Fig. 2, the purpose of whichwill be explained hereinafter.

For retarding the descent of the valve I provide a chamber, D, withinwhich the valve is arranged to travel vertically, and within which thevalve itself or the supplemental disk or plate 0 fits with substantialtightness, but not so tight as to cause any material friction againstthe interior of the vacuum-chamber. It is convenient to have the rod bywhich the valve O is raised pass through a hole in the top of thechamber, fitting therein substantially tight, but not so as to causematerial friction.

The operation of the device is as follows:

In order to flush the closet or other similar- .let continues open untilthe valve falls and closes it. In falling the valve has to displace thewater below it in a chamber, D, which is without air opening in its top,and its fall being retarded allows a larger amount of water to escapefrom the-tank, and also a slower descent of the valve than if it werenot incased in or surrounded by a chamber, as shown.

The time of the descent of the valve, and consequently the duration ofthe flush, may be regulated at pleasure by varying the relative size ofthe valve and the chamber D. If this chamber, for convenience, requireto be made of greater cross-section than the valve, thelateral area ofthe valve within the chamber may be increased by forming the valve withan enlargement, c, as shown in Fig. 2.

To lift the valve I prefer to employ a rod, as shown in Fig. 2 but achain, wire, or cord may be substituted. (See Fig. 1.) It is obviousthat the valve or the valve and disk does not require to be fitted soclosely within the chamber D as to form a piston or plunger 7 therein;but sufficient space should be left bebetween these parts to permit ofthe passage of the water between the edges of the valve and the walls ofthe chamber when displaced by the fall of the valve.

I am aware that valve-retarding devices have already been shown and usedprior to my invention, and I make no claim to them broadly. My presentconstruction differs from those heretofore used, in that it greatlyreduces the number of parts, and consequently the efficiency,simplicity, and cheapness of the apparatus.

I claim 1. In combination with a flushing-tank and 90 its outlet, avalve for opening and closing the outlet, a chamber without air-openingin its top and slightly larger in cross-section than the valve, andsurrounding it and communicating with the tank, as. shown, and a rod or9 5 chain, F, attached to the valve, whereby it may be raised Within thechamber to open the In testimony whereof I have hereunto sub- IO outlet,all substantially as herein set forth, scribed my name this 8th day ofSeptember, and for the purpose herein specified. A. D. 1884.

2. In combination, the valve 0, the chamber D, larger than the valve, asdescribed, 7 and Without air-opening in its top, and a lifting'device,E, attached to the valve, whereby it may be lifted to cause the flush,all substantially as set forth.

HENRY O. WEEDEN.

Witnesses:

.T. HENRY TAYLOR, VJAMES F. BLIGH.

